2 bolt mains?
2 bolt mains? are lt1's two bolt mains and lt4's 4 bolt mains or are they the same or what ive been lookin it up and cant figure it out ...the reason i ask would it be better to build an lt4 if they are 4 bolt mains instead of a lt1 .... and if i build an lt1 engine would the 2 bolt main be somthing to worry about in a high hp motor?
Originally Posted by sdm1234
yea the very last of the LT1s in the F-Bodies were carried over from the Vette's left-overs. mine is a 4-bolt main as well.
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Originally Posted by Matts94Z28
It came from the factory that way. Im guessing it was left over from an LT1 vette
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Originally Posted by cruzin94
are lt1's two bolt mains and lt4's 4 bolt mains or are they the same or what ive been lookin it up and cant figure it out ...the reason i ask would it be better to build an lt4 if they are 4 bolt mains instead of a lt1 .... and if i build an lt1 engine would the 2 bolt main be somthing to worry about in a high hp motor?
Factory 4 bolt here
there is no casting number difference, only way to tell a 4 from a 2, is to pull the pan and check
to help blackformy understand, GM built X number of LT1 4bolt blocks for the Corvettes, since the vettes went to LS1's first they probably had an overstock of 4bolt LT1's, so since the Fbods still had LT1s they put them in those so that way they wouldnt have a ton of blocks sitting in a warehouse not to be used again.
capisce?
there is no casting number difference, only way to tell a 4 from a 2, is to pull the pan and check
to help blackformy understand, GM built X number of LT1 4bolt blocks for the Corvettes, since the vettes went to LS1's first they probably had an overstock of 4bolt LT1's, so since the Fbods still had LT1s they put them in those so that way they wouldnt have a ton of blocks sitting in a warehouse not to be used again.
capisce?
LoL, I got that, at first I was just wondering how the guy with the 94 got one from the factory....and wondering if any other pre-97 people got one b/c it should be only a 97 thing..but it could be what Merv said.
2 bolts will hold a lot more than most people are willing to admit and if you genuinely need 4 bolt you should be looking at aftermarket caps so even then a 2 bolt block is the better starting point.
On The Tree
Joined: May 2007
Posts: 143
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From: N.E. PA
Originally Posted by 96capricemgr
2 bolts will hold a lot more than most people are willing to admit and if you genuinely need 4 bolt you should be looking at aftermarket caps so even then a 2 bolt block is the better starting point.
Originally Posted by cruzin94
after market caps? so why would a 2 bolt be a better starting point then goin and buy a used lt1 vette block and building that
2 bolt blocks will take a lot. If your pushing the envolope then a 2 bolt block with splayed (4 bolt) caps is the way to go. The 2 outer bolts will be at an angle to stop the cap from deflecting under heavy loads.
Originally Posted by cruzin94
after market caps? so why would a 2 bolt be a better starting point then goin and buy a used lt1 vette block and building that
TECH Enthusiast
Joined: Jul 2006
Posts: 638
Likes: 0
From: San Diego
Originally Posted by 96capricemgr
2 bolts will hold a lot more than most people are willing to admit and if you genuinely need 4 bolt you should be looking at aftermarket caps so even then a 2 bolt block is the better starting point.
Holly Cow!! I think this is the first turly inteligent, educated and useful post I have ever seen on this entire board!